US2675648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Martin
Assignee: —
•
Filing: —
•
Granted: 1954-04-20
•
Expires: 1971-04-20
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:03
CPC Classifications
C; C03; C03B; C03B33/00; C03B33/09; C03B33/095; Y; Y10; Y10T; Y10T225/00; Y10T225/30; Y10T225/304; Y10T83/00; Y10T83/283
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US317805A
Cited
US1473675A
Cited
US1652959A
Cited
US1973546A
Cited
US1719588A
Cited
US1920528A
Cited
US2410931A
Cited
US2428407A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-19 | 1957-10-19 | 1958-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-19 | 1961-10-19 | 1962-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-19 | 1965-10-19 | 1966-04-20 | $7700.00 | Window Closed / Lapsed |